Science:脂肪细胞可在小鼠体内对抗感染有帮助

2016-10-31 生物360 生物360

据在小鼠中进行的一项新研究披露,脂肪组织呈现出一种针对细菌感染的直接的保护作用。研究人员说,这些发现应该有助于研究为什么肥胖和有胰岛素抵抗性的个体更容易发生细菌感染。Ling-juan Zhang和同事对小鼠皮肤中的脂肪细胞如何对金黄色葡萄球菌感染做出反应进行了研究;金黄色葡萄球菌是在人体中造成MRSA的病原体。他们发现,为了反击,这些特定细胞会产生一种被称作组织蛋白酶抑制素的抗菌肽。研究人员观察

Science:脂肪细胞可在小鼠体内对抗感染有帮助

据在小鼠中进行的一项新研究披露,脂肪组织呈现出一种针对细菌感染的直接的保护作用。

研究人员说,这些发现应该有助于研究为什么肥胖和有胰岛素抵抗性的个体更容易发生细菌感染。Ling-juan Zhang和同事对小鼠皮肤中的脂肪细胞如何对金黄色葡萄球菌感染做出反应进行了研究;金黄色葡萄球菌是在人体中造成MRSA的病原体。

他们发现,为了反击,这些特定细胞会产生一种被称作组织蛋白酶抑制素的抗菌肽。研究人员观察到,在小鼠皮肤正下方的脂肪层会在接种细菌之后变厚。他们设计制造了无法形成新脂肪细胞的小鼠并发现,这些小鼠比它们的能产生脂肪细胞的对等小鼠更容易发生MRSA感染。此外,据研究人员披露,成熟脂肪细胞比年轻脂肪细胞所产生的组织蛋白酶抑制素要少,因此它们的保护性也较小。

总之,这些新的发现提示,脂肪细胞可直接觉察病原体金黄色葡萄球菌并促发限制感染的先天性免疫反应。在此之前,研究人员已经认识到许多细胞——包括上皮细胞、肥大细胞和白细胞——是细菌感染时的首批做出反应的细胞,但这一新的研究还将脂肪细胞添加到了这一防御细胞名录之中。由John Alcorn和Jay Kolls撰写的一篇《视角》文章更为详细地对这一研究及其影响进行了解释。

原始出处:

Ling-juan Zhang, Christian F.,et al.Dermal adipocytes protect against invasive Staphylococcus aureus skin infection. Science, 2 January 2015; DOI:10.1126/science.1260972

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    2016-11-07 studylzc

    学习了。真长见识。

    0

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    2016-11-02 jichang
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  4. [GetPortalCommentsPageByObjectIdResponse(id=154175, encodeId=85811541e5c3, content=学习了。真长见识。, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=/v1.0.0/img/user_icon.png, createdBy=2dd71722896, createdName=studylzc, createdTime=Mon Nov 07 21:56:55 CST 2016, time=2016-11-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1375361, encodeId=668313e5361c0, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Wed Nov 02 02:11:00 CST 2016, time=2016-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1400892, encodeId=c0071400892ae, content=<a href='/topic/show?id=8fde8438079' target=_blank style='color:#2F92EE;'>#脂肪细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84380, encryptionId=8fde8438079, topicName=脂肪细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=77712282976, createdName=shenxlcyp, createdTime=Wed Nov 02 02:11:00 CST 2016, time=2016-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=152567, encodeId=925115256e6a, content=所以人体一物降一物,凡是存在必然有它的理由,虽然现在我们都认为脂肪细胞是有害的,但是人体之所以要储存脂肪,不仅仅是供应能量,还有可能有其他更多的生理作用, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c4a5105539, createdName=lovetcm, createdTime=Tue Nov 01 08:46:53 CST 2016, time=2016-11-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=152397, encodeId=1f0315239e2d, content=不错,学习了,顶顶!, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=/v1.0.0/img/user_icon.png, createdBy=c10c75714, createdName=zhuzhuba1, createdTime=Mon Oct 31 15:00:16 CST 2016, time=2016-10-31, status=1, ipAttribution=)]
    2016-11-01 lovetcm

    所以人体一物降一物,凡是存在必然有它的理由,虽然现在我们都认为脂肪细胞是有害的,但是人体之所以要储存脂肪,不仅仅是供应能量,还有可能有其他更多的生理作用

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=154175, encodeId=85811541e5c3, content=学习了。真长见识。, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=/v1.0.0/img/user_icon.png, createdBy=2dd71722896, createdName=studylzc, createdTime=Mon Nov 07 21:56:55 CST 2016, time=2016-11-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1375361, encodeId=668313e5361c0, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Wed Nov 02 02:11:00 CST 2016, time=2016-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1400892, encodeId=c0071400892ae, content=<a href='/topic/show?id=8fde8438079' target=_blank style='color:#2F92EE;'>#脂肪细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=84380, encryptionId=8fde8438079, topicName=脂肪细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=77712282976, createdName=shenxlcyp, createdTime=Wed Nov 02 02:11:00 CST 2016, time=2016-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=152567, encodeId=925115256e6a, content=所以人体一物降一物,凡是存在必然有它的理由,虽然现在我们都认为脂肪细胞是有害的,但是人体之所以要储存脂肪,不仅仅是供应能量,还有可能有其他更多的生理作用, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c4a5105539, createdName=lovetcm, createdTime=Tue Nov 01 08:46:53 CST 2016, time=2016-11-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=152397, encodeId=1f0315239e2d, content=不错,学习了,顶顶!, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=/v1.0.0/img/user_icon.png, createdBy=c10c75714, createdName=zhuzhuba1, createdTime=Mon Oct 31 15:00:16 CST 2016, time=2016-10-31, status=1, ipAttribution=)]
    2016-10-31 zhuzhuba1

    不错,学习了,顶顶!

    0

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